It's so that I can generate a map showing the whole of the route we took around Iceland. I've got 12 separate .fit files, one for each day, and I'd like to generate a single file for the whole trip.
Stitch the GPX files together instead - unless you want HR or something else specific to the FIT file?
@Howard started
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It's so that I can generate a map showing the whole of the route we took around Iceland. I've got 12 separate .fit files, one for each day, and I'd like to generate a single file for the whole trip.